Bag frame



July 5, 1932. B, A. OTTEN 1,866,483

' BAG FRAME Filed Nov. ll, 1929 Patented July 5, 1932 UNITEDSTATES JP I BENJAMIN o'rrniv, or WAUWATOSA, Wisconsin; ASSIGNOR TO MiLWAUKEE swamp- 'ING COMPANY, or MILWAUKEE, wrseonsnv, A oonrpne'rroiv or wiscousrn BAG FRAME Applicat on med, Home; 1 ,1929. s r l No; 40 ,1 9.5-

l-leretofore four methods have been em-.'

ployed to facilitate the connection "of travelg) ing bags of various types With their frames. By the oldest method, the: frame members are encased in leatheror other wrappings, portions of which are projected laterally of the frame to allow thebag to be stitched 1'0 thereto. Theseconnections 'stretch and become displaced. A later method is toprovide the I frame members with apertures through which stitches canbe taken; ll1'ese apertures weaken the frame, and during machine stitching it is difiicult to get the needle to invariably register with the openings, many needles are broken. A third method is to make the frame members thin enough so that the needles may passthrough them, but 29 such frame members are necessarily too weak to provide durable bags, and more recently thin metal connector strips have been welded or otherwise secured to the exterior surfaces of the frame members, and the bag stitched 26 thereto. .These are quite satisfactory for oer;

tain types of b'ag,but it is recognized as desirable, at least in some cases,.toprovide for increased security rigidity in the connection of the strip with the frame. V.

The object of the invention herein ,disclosed is to reorganize bag framesof the last mentioned type in such mmer thatthecon nector strip may be weldedto the inner sur face of the associated frame member, or the supporting flanges thereof, and disposed with one flange of the connector projecting across the inner margin of the supporting flange of the jaw, whereby, the bag may be applied and stitched in a manner similar to that followed in said former method, but with less strain upon the points of connection with the jaw.

A further object of my invention is to p j j p a s cia edosu e flang 1'2 d :3, T p

provide means whereby the operation of securing the above mentioned connector strips to bag frame jaws may be expedited, and

whereby the connector strip may be made to more effectively reinforce the jaw and make possible the use of jaws of less thickness,

width of supporting flange and weight than has heretofore been thought necessary.

' Int e dra n I 1 gu i a cr ss s ti llial' ie Of Q bag frame jaws o which IIlY' ll QIAl Q has been; pp d, frag e ted the agf' i g o llu tr d in a o iat d rela o to he j w a d nnec d h reto- Figure 2 is an isometrie view of a por: t f a b i f b or so-ea l d. kit 'bagJ Which my nvent en has b n appl d, d

view illustrating the manner in which the onnec e t ip sspet lded t0 th surrb ing j 'flange-j Figure 315 a fragmentary view of a hinged ag. r me. jaw to which inventionhas been applied. H

In Figure 1 the supporting flanges and 1 1 and their respective elosure flanges '12 and lg may be assumed to represent the jaws ,of any ordinary type'of bag, although the specificillustration indicates the "jaws offa kit bag with end flanges, 15 and 16, respectively. The [b'2 1;g- 17"hasv its margins butted against the ;fianges .10 and 11, respectively, and secured thereto by thin metal connector strips 20, each having an upwardly turned or elbowed portion '21 which fits against the inner surfaces of the. associated supporting flanges and ll, respectively. jIfa jlinin'g 22 is employed, its marginal portions will be preferably interposed between the-bag and'the connector strip 20, and both the' bag and its lining will be secured to the eta-- nector strip 'byfa line of stitching 23. 5

or convenience in description the flanges which .oeeupy vertica'l planes when the bag is in a normal upright position are called the supporting flanges, and the faces of] these flanges which are opposed whenthe jaws are c o ed are erme t e inne es; as'oprosed to the exposed faces against which the bag ,covermargim are'but h f ui po 'pgi t ges 0- and w he t yiand the thin meta n t js e with their I outwardly turne PQIl iO iS QOa form what may be eonveniently-termed Z shaped frame'members, in which the lower arm is relMiVGlYthiilflQ i1 9 erm i te portion perpendiculartothe other two. 7 The t rm zhtpedh 'us dye th laitd hg the fact that one of the jaws will have the form of a reversed Z-shape with reference to the other when viewed from the same point. The structure above described may be stamped or pressed from sheet metal as an article of manufacture constituting the product of a metal working plant, operated independently of the bag factories to which these articles may be delivered to facilitate manufacture of bags. v

The upturned flanges 21 of the connector will be secured to the jaw flanges 10 and 11 by any suitable means. Spot welding, as indicated at 25, will be found less expensive than riveting and the points of connection need not be very close together, for the reason that the flanges or connector strips are placed directly against the inner margins of v the jaw flanges 10 and 11 against thcin'ner surface of which the flanges 9.1 are applied. Therefore the relatively thick metal of the jaw flanges 10 and 11 will resist pulling strains exerted by the bag independently of the connections 25 and will also resist outward pressure exerted by the contents of the bag against the connector strips 20. T he eonnector strips also form covers for the inner margins ofthe jaws 10 and 11 to protect the contents of the bag from contact with such jaws and provide rounded surfaces 26 at said elbows. I

The jaw 11 is shown in Figure 2 and it will be observed that the connector strips 20,

- for jaws of the kit type of bag, comprise straight angle bars which may be interchangeably applied to the respective jaws 10 and 11 by merely reversing them end for end. But when appliedito the hinged bag frame jaws 10a of the type shown in Figure 3, the connector strips 20d will have their end portions bent, or elbowed, as indicated at 28, whereby the portions 29 of the strip may be extended downwardly into proximity with the extremity 10a.near the hinge pin aperture 30. Otherwise the structure is substantially the same as thatshown in Figures flanges are sufiiciently distantfromrthe space occupied by the contents of the bag to largely avoid the danger of catching and tearing clothing, or otherwise damaging the 0011f tents when the jaws are being closed. Also, the margins of the bag 17 are inset and but-- ted against the supporting flange-s at such material or material of less width in the manufacture of the jaws since ordinarily the thickness of the material in a bag frame jaw is determined by the required strength of the supporting flange as distinguished from that of the closure flange. Ordinarily, however, the reinforcement will be utilized to make possible a supporting flange of less width than those heretofore employed for bags of equal capacity. The inner edge of the supporting flange furnishes a line of substantially rigid support along the connector strip elbow, and in close proximity to the stitching thus providing great resistance against internal pressures.

I claim:

The combination with a travelling bag, of a set of bag frame jaws, each composed of three members including a central member substantially perpendicular to the other two members, said other two members extending in opposite directions from the upper and lower margins of the central member to form upper and lower flanges, the lower member being secured to the inner face of the intermediate member and folded across the lower margin thereof and extending outwardly to form a bag supporting flange, said lower member acting to protect the contents of the bag from contacting with the lower margin of the intermediate member, said bag having its marginal portions secured to the upper surfaces of the flanges provided by the lower members of the jaws.

' BENJAMIN A. OTTEN. 

